I do all my work with ardour. I still have a lot to learn but I am
getting more and more profficient at it. My soundclick site is 99% me
and so 99% ardour:
http://www.soundclick.com/noahroberts/
my guitars101 artist page contains stuff I mixed with ardour:
http://www.guitars101.com/jamroom/bands/18/
The other participants used various unknown programs to create their
tracks, and the BT was originally an mp3, but the mixing and such was
done with ardour. My parts were recorded with ardour.